Space Commerce 1994 Forum: The 10th National Space Symposium. Proceedings report

The theme of the 10th National Space Symposium was 'New Windows of Opportunity'. These proceedings cover the following: Business Trends in High Tech Commercialization; How to Succeed in Space Technology Business -- Making Dollars and Sense; Obstacles and Opportunities to Success in Technology Commercialization NASA's Commercial Technology Mission -- a New Way of Doing Business: Policy and Practices; Field Center Practices; Practices in Action -- A New Way: Implementation and Business Opportunities; Space Commerce Review; Windows of Opportunity; the International Space Station; Space Support Forum; Spacelift Update; Competitive Launch Capabilities; Supporting Life on Planet Earth; National Security Space Issues; NASA in the Balance; Earth and Space Observations -- Did We Have Cousins on Mars?; NASA: A New Vision for Science; and Space Technology Hall of Fame

Plantation states : region, race, and sexuality in the cultural memory of the U.S. South, 1900-1945

In "Plantation States," I analyze cultural representations of plantation formations from the first half of the twentieth century, a period when "the South" operated as an imagined social landscape that galvanized post-Civil War national reconciliation and expansion as well as resistant social movements. I argue that the plantation, and the region it often symbolizes, served as a powerful site of identification that animated collective memories and provoked competing visions of progress. Consequently, I consider how imagined plantation pasts inevitably invoked a "neoplantation" present and a cultural geography that had both temporal and spatial mobility. To reconstruct how the neoplantation served as a contested cultural landscape, I necessarily draw from a wide range of cultural texts, including turn-of-the-century Atlanta newspapers, unpublished play scripts, canonical modernist novels, and prisoner-produced journalism. Throughout I am concerned with cultural texts that represent continuities and ruptures in the transition from plantation slave cultures to emergent cultures of empire and incarceration. I look at three different contexts in which the plantation is re-imagined and adapted for the twentieth century in neoplantation forms, namely: the Atlanta white riot of 1906, the U.S. imperial occupation of Haiti (1915-1934), and the evolution and reform of the twentieth-century Southern penitentiary. I consider these decades of "Jim Crow Empire" as an era of collusion among white supremacist projects, state delimitation of citizenship, and U.S. imperial expansion. I examine discourses of race and sexuality, in particular, as integral to technologies that furthered segregation, racial/sexual terror, and unfree labor structures. I therefore highlight the tensions between the neoplantation's development of capital, on the one hand, and the formations of "plantation state" subjectivity on the other. I suggest that racialized and sexualized neoplantation subjects were often characterized as deviant or criminal by those who sought to advance systems of social control, while those who opposed structures of inequality made the modernized plantation their target. I formulate the neoplantation as a cultural institution, a social structure, and a hierarchy of labor that produced dangerous subjects who troubled the boundaries of race, sexuality, region, and natio

Design and Testing of a Closed, Stirring Respirometer for Measuring Oxygen Consumption of Channel Catfish Eggs

A closed, stirring respirometer was designed to agitate small egg mass samples of channel catfish Ictalurus punctatus while measuring oxygen consumption by the eggs. Egg mass samples ranging in size from 15 to 46 g were placed on a screen platform above a magnetic stir bar in the respirometer; the degree of agitation was controlled with a magnetic stir plate. Dissolved oxygen (DO) concentration and temperature were measured with a luminescent DO sensor and meter. The respirometer was used to determine routine metabolic rate and limiting oxygen concentration (the presumed hypometabolic transition zone) on egg mass samples from 10 different spawns at 0 to 5 d postfertilization. Routine metabolic rate increased from 4.8 ± 1.3 (0 d postfertilization) to 174.0 ± 7.8 mg O2 ·kg-1 ·h-1 (5 d postfertilization). The limiting oxygen concentration increased similarly up to 87.0% ± 2.7% (maximum individual value = 95.9%) air saturation by 5 d postfertilization. The respirometer described could not be used for sac fry, but it proved effective with clumped channel catfish eggs. Preliminary channel catfish hatchery management recommendations are to maintain DO concentrations in hatchery troughs at air saturation at least during the last day of egg development